ZR-BPVVP聚氯乙烯绝缘和护套铜丝编织屏蔽变频电力电缆。
ZR-BPVVP2聚氯乙烯绝缘和护套铜带绕包屏蔽变频电力电缆。
ZR-BPVVPP2聚氯乙烯绝缘和护套铜丝编织铜带绕包屏蔽变频电力电缆。
ZR-BPVVP3聚氯乙烯绝缘和护套铝聚酯复合膜绕包屏蔽变频电力电缆。
3、规模增长过猛目前，电线电缆行业总体能力大于需求一倍以上，各大类产品2000年的预测需求数均小于目前生产能力。
编辑本段矿用电缆价格计算公式矿用电缆系列价格公式如下：铜的重量X铜价计算：丝经÷2=1.25X1.25X3.14=平方数X丝的根数X0.89X当时铜价+10%的加工费。
Our company guarantees that the products can operate reliably and safely under the correct installation, normal operation and maintenance.
Product introduction - plastic insulated control cable | | KVV control cable KVVR control cable | | KVVP control cable shielding control cable KVVP | | KVVRP shielding control cable KVVP2 control cable | | KVVP2-22 control cable KVV22 sheathed control cable | control cable KVV | control cable KVVR | control cable KVVP | control cable KVVRP | control cable KVV22 product details: plastic insulated control cable: GB9330-88 scope of application: This product is fit for ac rated voltage up to and including 450/750 control, monitoring circuit and protection circuit using features: 1, the conductor long-term allowed working temperature is 70 ℃. 2, when laying temperature 0 ℃ or higher. 3. Small bending radius: 4. For unarmored cable, it should be no less than 6 times the outer diameter of the cable. 5. The cable with armor or copper shield shall not be less than 12 times the outer diameter of the cable. 6. The soft cable with screen shielding structure shall not be less than 6 times the outer diameter of the cable. 7. Model and name: KVV copper core PVC insulated PVC sheath control cable
注：ZR-阻燃G-隔氧层NH-耐火阻燃电力电缆按GB1270《额定电压35kV及以下铜芯、铝芯塑料绝缘电力电缆》标准生产，还可根据用户需要按国际电工委员会推荐标准IEC、英国标准、德国标准及美国标准生产。
一个交换机能带动多少个网络监控摄像头？千兆交换机一般接200万网络摄像机几个？24个网络头，用一台24口百兆交换机行不行？今天我们就这些问题，来系统深入地了解一下。
根据摄像机的码流和数量来选择摄像机码流选择交换机前，要弄清楚每路图像占用多少带宽。
摄像机数量要弄清楚交换机的带宽容量。
常用交换机有百兆交换机、千兆交换机。
它们的实际带宽一般只有理论值的60~70%，它们端口的可利用带宽大致是60Mbps或600Mbps。
Fire retardant soft structure cable for communication equipment room (power line of communication equipment) Computer cable DJVPV DJVVP, DJYVP DJYJVP, DJYPV, DJYJPV, DJVPVP, DJYPVP, DJYJPVP, JVV, JVVP DJYPRV airport lighting use cable JDYJY - 2 kv 1 x6 airport lighting use cable DJ - JDKR - 500 - v 1 x2. 5 1 x4
1. Product implementation standard: gb9330-88 (refer to IEC227, better voltage resistance than IEC227), ga306-2001 (flame retardant type). 2. Purpose: this product is applicable to control, signal protection and measuring lines with rated voltage of 450/750v and below under dc and ac 50hz-60hz. 3, product specifications and scope: product specifications range using occasions KYV, KYVP, KYVP2 0.5 - was 10, 2-61 core is the product high insulation resistance, waterproof properties is strong, good cold resistance, suitable for weak current control system or strong electromagnetic interference zone. KYV20,KYV22 0.5-10mm2,4-61 core FYV30,KYV32 0.5-10mm2,7-61 core KYVR 0.5-6mm2,2-61 core KYVRP 0.5-4mm2,2-61 core KYVP22, kyvp2-22 1.5-10mm2,4-61 core note: model pre-flame retardant is suitable for fire retardant environment. 4, using features: cable temperature under installation should not below 0 ℃, the cable conductor long-term allowed working temperature is 70 ℃. The allowable bending radius of the cable: for the armored cable, it should not be less than 6 times the outer diameter of the cable. For the cable with armored or copper belt shielding structure, it shall be no less than 12 times the outer diameter of the cable. For soft cable with shield layer structure, it should be no less than 6 times the outer diameter of the cable.
加“ia、I、ZRI、IZ”是本安，加“N、NA、NH”是耐火、加(T、D)是对绞形式、屏蔽：P铜网屏蔽、P1镀锡屏蔽、P2铜箔屏蔽、P3铝箔屏蔽、PL铝箔屏蔽、P22屏蔽带铠装、P2/22铜箔屏蔽带铠装，耐压等级有：300/500V、300/300V、-0.5KV、-0.75KV、450/750V。
Product standard: YD/ t1173-2001
电动葫芦电缆-电动葫芦专用电缆-电动葫芦带丝绳专用电缆用途：本产品具有柔软、耐磨、防油等特性，线旁附钢丝绳，增强抗拉力。
适用于交流额定电压0.6/1KV及以下的行车、台车、传输机械等移动电器用动力传输线及控制、照明、通讯线路，本产品已广泛应用于冶金、电力、船舶、港口等行业。
产品型号:KVVRP2-22--ZR-KVVRP2-22--ZR-KVVP2-22-R。
产品展商:天津市电缆总厂第一分厂简单介绍：专业生产:KVVRP2-22--ZR-KVVRP2-22--ZR-KVVP2-22-R铜芯绝缘和护套铜带屏蔽钢带铠装（阻燃）控制电缆。
校准5502A的电阻功能时，**根据测试点数值使用8508A电阻测量功能的手动量程，避免设置在自动量程时，测量仪表在寻找合适量程的校准器也在寻找合适的工作电流，使得两台仪器不能尽快选择到合适的量程和合适的电流范围，而不能正常测量，长时间得不到正确的测量结果。
在校准5520A和5522A电阻功能时，在36MΩ，110MΩ两个校准测试点，不确定度为1.7和2.7。
不能满足校准要求。
可以应用校准边界保证(Guardbanding)，在校准调整时，更严格地控制校准器的偏移，来满足校准的要求。
该电缆主要用于交流或直流300V及以下的工作系统，在500V及以下时能正常工作。
HYV——铜心实心聚乙烯绝缘，聚氯乙烯护套，绕包铝箔带，市话通信电缆。
HPVV——铜心聚氯乙烯绝缘，聚氯乙烯护套铝箔绕包带，市话通信电缆。
本补偿导线一般用聚氯乙烯绝缘和护套补偿导线或电缆具有优良的防潮、耐磨及阻燃特性；耐高温氟塑料绝缘和护套补偿导线或电缆采用连续挤出工艺，更有耐高温、耐寒、耐酸碱油水、不延燃、抗老化等优越性，产品质量高于国标GB/T等效采用IEC584-3)的规定。
型号表示： 1）绝缘的类型与代表符号 Y－－实芯聚烯烃绝缘 YF－－泡沫聚烯烃绝缘 YP－－泡沫/实芯皮聚烯烃绝缘 2）金属屏蔽带的类型与代表符号 A－－涂塑铝带粘结屏蔽聚乙烯护套 3）结构特征符号及表示意义 T－－石油膏填充 C－－自承式 4）电缆外护层形式。
The protective sheath is made of flame retardant material with high safety factor. Adopt advanced technology production, make the impedance uniformity of the cable good. The multi-core cable is more convenient in the rack laying. According to the need can produce flame retardant, cold - resistant, heat - resistant and other special requirements.